<template>
  <div class=''>

    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图 -->
    <el-card class="box-card">
      <!-- 搜查和添加区域 -->
      <el-row :gutter="20">
        <el-col :span='8'>
          <el-input placeholder="请输入内容" v-model="queryinfo.query" clearable @clear="getUserList()">
            <el-button slot="append" icon="el-icon-search" @click="getUserList()"></el-button>
          </el-input>
        </el-col>
        <el-col :span='4'>
          <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
        </el-col>
      </el-row>

      <!-- 用户列表区域 -->
      <el-table :data="userList" border stripe>
        <el-table-column type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStartChange(scope.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
              <!-- 修改按钮 -->
              <el-button type="primary" icon="el-icon-edit" size="mini" @click="getEditUser(scope.row.id)"></el-button>
              <!-- 删除按钮 -->
              <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
              <!-- 分配角色按钮 -->
              <el-tooltip effect="dark" content="分配角色" placement="top">
                <el-button type="warning" icon="el-icon-setting" size="mini"  @click="showSetRole(scope.row)"></el-button>
              </el-tooltip>
          </template>
        </el-table-column>
      </el-table>

      <!-- 分页区域 -->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryinfo.pagenum"
        :page-sizes="[1, 2, 5, 10]"
        :page-size="queryinfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
    </el-card>

    <!-- 添加用户提示对话框 -->
    <el-dialog
      title="提示"
      :visible.sync="addDialogVisible"
      width="30%"
      @close="addDialogClosed"
      >

      <!-- 内容主体区域 -->
      <el-form
      :model="addForm"
      :rules="addFormRules"
      ref="addFormRef"
      label-width="80px"
      >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password" type="password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="电话" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>

      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addUser">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户提信息示对话框 -->
    <el-dialog
      title="修改用户信息"
      :visible.sync="editDialogVisible"
      width="30%"
      @close="editDialogClosed()"
      >

      <!-- 内容主体区域 -->
      <el-form
      :model="editForm"
      :rules="editFormRules"
      ref="editFormRef"
      label-width="80px"
      >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="editForm.username" :disabled="true"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="电话" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>

      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editUser()">确 定</el-button>
      </span>
    </el-dialog>

    <!-- 分配角色对话框 -->
    <el-dialog
      title="分配角色"
      :visible.sync="setRoleDialogVisible"
      width="30%"
      @close="closedSetRole()"
      >

      <!-- 内容主体区域 -->
      <el-form
      :model="userInfo"
      label-width="100px"
      >
        <el-form-item label="当前的用户">
          <el-input v-model="userInfo.username" :disabled="true"></el-input>
        </el-form-item>
        <el-form-item label="当前的角色">
          <el-input v-model="userInfo.role_name" :disabled="true"></el-input>
        </el-form-item>
        <el-form-item label="分配新的角色" prop="email">
            <el-select v-model="selectedRoleById" placeholder="请选择">
              <el-option
                v-for="item in roleList"
                :key="item.id"
                :label="item.roleName"
                :value="item.id">
              </el-option>
            </el-select>
        </el-form-item>
      </el-form>

      <!-- 底部区域 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script>

export default {
  name: 'Users',
  props: {

  },
  data () {
    // 验证邮箱规则
    var cheeckMail = (rule, value, callback) => {
      if (!value) return callback()
      const regEmail = /^[a-zA-Z0-9_.-]+@[a-zA-Z0-9-]+(\.[a-zA-Z0-9-]+)*\.[a-zA-Z0-9]{2,6}$/
      if (regEmail.test(value)) {
        return callback()
      }
      callback(new Error('请输入合法的邮箱'))
    }
    // 验证手机号的规则
    var cheeckMobile = (rule, value, callback) => {
      if (!value) return callback()
      const regMobile = /^1([38][0-9]|4[579]|5[0-3,5-9]|6[6]|7[0135678]|9[89])\d{8}$/
      if (regMobile.test(value)) {
        return callback()
      }
      callback(new Error('请输入合法的手机号'))
    }
    return {
      userList: [],
      total: 0,
      // 获取用户列表参数
      queryinfo: {
        query: '',
        // 当前的 页数
        pagenum: 1,
        // 单前每页显示多少条数据
        pagesize: 2
      },
      // 弹出用户添加对话框
      addDialogVisible: false,
      // 添加用户的表单数据
      addForm: {
        username: '',
        password: null,
        email: null,
        mobile: null
      },
      // 添加表单的验证规则对象
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
        ],
        email: [
          { validator: cheeckMail, trigger: 'blur' }
        ],
        mobile: [
          { validator: cheeckMobile, trigger: 'blur' }
        ]
      },
      // 弹出用户修改对话框
      editDialogVisible: false,
      // 修改用户信息的表单数据
      editForm: {},
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: cheeckMail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号码', trigger: 'blur' },
          { validator: cheeckMobile, trigger: 'blur' }
        ]
      },
      // 分配角色对话框显示和隐藏
      setRoleDialogVisible: false,
      userInfo: {},
      roleList: [],
      selectedRoleById: ''
    }
  },
  created () {
    this.getUserList()
  },
  methods: {
    // 获取用户列表
    async getUserList () {
      const { data: res } = await this.$http.get('users', {
        params: this.queryinfo
      })
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg)
      }
      if (res.data.users.length === 0 && res.data.totalpage !== 0) {
        this.queryinfo.pagenum -= 1
        // console.log(res.data.users)
        this.getUserList()
        return
      }
      this.userList = res.data.users
      this.total = res.data.total
    },
    // 监听 pagesize 改变事件
    handleSizeChange (NewSize) {
      this.queryinfo.pagesize = NewSize
      this.getUserList()
    },
    // 监听 页码值 改变的事件
    handleCurrentChange (NewPage) {
      this.queryinfo.pagenum = NewPage
      this.getUserList()
    },
    // 监听 switch 状态的改变
    async userStartChange (userInfo) {
      const { data: res } = await this.$http.put(
        `users/${userInfo.id}/state/${userInfo.mg_state}`
      )
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error('更新失败')
      }
      this.$message.success('更新成功')
    },
    // 对话框管理，初始化表单值
    addDialogClosed () {
      this.$refs.addFormRef.resetFields()
    },
    // 执行添加用户
    addUser () {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return
        // 发起添加用户请求
        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) return this.$message.error('用户添加失败')
        this.$message.success('用户添加成功')
        // 隐藏添加用户对话框
        this.addDialogVisible = false
        // 重新获取用户列表
        this.getUserList()
      })
    },
    // 初始化用户信息修改对话框
    async getEditUser (id) {
      // 根据用户id,查询用户信息
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg)
      }
      this.editForm = { ...res.data }
      this.editDialogVisible = true
    },
    // 对话框管理，初始化表单值
    editDialogClosed () {
      this.$refs.editFormRef.resetFields()
    },
    // 执行修改用户
    editUser () {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        // 发起用户信息修改请求
        const { data: res } = await this.$http.put('users/' + this.editForm.id, {
          email: this.editForm.email,
          mobile: this.editForm.mobile
        })
        if (res.meta.status !== 200) return this.$message.error('用户修改失败')
        // console.log(res)
        // 隐藏添加用户对话框
        this.editDialogVisible = false
        // 重新获取用户列表
        this.getUserList()
        // 提示用户修改成功
        this.$message.success('用户修改成功')
      })
    },
    // 删除用户信息
    async removeUserById (id) {
      // 弹框提示用户是否删除
      const confirmResult = await this.$confirm('此操作将永久删除该用户', '提示', {
        cancelButtonText: '取消',
        confirmButtonText: '确定',
        type: 'warning'
      }).catch(err => {
        return err
      })

      // 判断是否发起删除用户请求
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }

      // 发起删除用户请求
      const { data: res } = await this.$http.delete('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('删除用户失败')
      }
      this.$message.success('用户删除成功')

      // 判断被删除的是否为最后一页的唯一数据

      this.getUserList()
    },

    // 展示角色分配框
    async showSetRole (userInfo) {
      this.userInfo = userInfo

      // 获取角色列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }
      this.roleList = res.data

      // 显示角色分配对话框
      this.setRoleDialogVisible = true
    },
    // 隐藏角色分配框时,清空数据
    closedSetRole () {
      this.userInfo = {}
      this.selectedRoleById = ''
    },

    // 点击确认分配角色
    async saveRoleInfo () {
      if (!this.selectedRoleById) {
        return this.$message.error('请选择要分配的角色！')
      }
      // console.log(this.userInfo.id, this.selectedRoleById)
      // 发起分配角色请求
      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, {
        rid: this.selectedRoleById
      })
      if (res.meta.status !== 200) {
        return this.$message.error('角色分配失败')
      }

      // 更新数据
      this.getUserList()
      // 隐藏角色分配对话框
      this.setRoleDialogVisible = false
    }
  }
}
</script>
<style  scoped>
.el-breadcrumb{
  margin-bottom: 15px;
  font-size: 12px;
}
.box-card{
  box-shadow:  0 1px 1px rgba(0, 0, 0, 0.15) !important;
}
.el-table,.el-pagination{
  margin-top: 15px;
}
</style>
